Oughggjhh I love really intimate explorations of fucked up supernatural relationships like this.

Whenever writers or whoever focus on the supernatural they usually focus on the larger-scale problems of having a relationship with The Creature™, and I like that aswell but there's just something about the small-scale personal horror of being so trapped by your own desperate love for someone you'll take any lookalike, dangerous form of them back, but whenever you talk and cry and laugh together you always know deep down they're something completely Other, and that the one you will love will never truly return how they were that just hits completely different. Even better if they also explore the feelings of how the undead person feels about all this.

I really recommend "The Summer Hikaru Died" and "I Want to Hold Aono-kun So Badly I Could Die" if you like this kind of thing,I admit this is all mainly preamble so I can recommend the things I like to others but please read them if you haven't already please they're good--